There's a great article about the role of mentalising, and mentalisation based therapy, in coping with borderline personality disorder. And you can just download it from the internet without paying half your week's food budget to a publisher. Thank you lovely Routledge!

This paper will outline a developmental model for understanding borderline personality disorder (BPD) in terms of a deficit in mentalizing capacity, consider the changing views of BPD as a severe and enduring personality disorder, and argue that a focus on mentalization as a core component of treatment facilitates successful outcome not only because it addresses a central problem of the patient, but also because it reduces the likelihood of causing harm in a group of patients who may be particularly vulnerable to the negative effects of psychotherapeutic intervention.